Tramper



Jan. 23, 1923,

WLH- HLTBY.

TRAMPEB, m50 SEPTg 5, 1919, 77V

4 SHEETS-SHEET l.

W J1? oli-by vlLM 956,

4 SHEETS-SHEET 2.

TRAMPER. FILED sEPT.5, 1919.

W. H. HOLTBY.

Jang 2&3 1923.!

W. H. HOLTBY. TRAIVIPER. FILED sEPT.s.1919;

A Jan. 23, 1923.

4 SHEETS-SHED 4.

Arron/ms Patented dan. 23, 1923.

WILKIE H. HOLTBY, OF MANGUM, OKLAHOMA.

TRAMPER.

, Application led September 5, 1919.

To all whom t may conceive:

Be it known that l, `W1LKIE H. Horner, a citizen of the United States, residing at irlangiun, in the county of Greer and State of (.)klahoma, have invented new and useful Improvements in Trampers, of which the following;` a specification My invention relates to improvements in trampers for packing or baling cotton or the like.

rin importantr object of the invention is to provide mechanical means for feeding the cotton or t-he like into the press box, such means operating in conjunction with the tramper head, so that such feeding means automatically stops upon the descent of the trampe-r head.

further object of the invention is to provide means whereby the raken employed to discharge the cotton into the central portion of the press box, i9, automatically moved out of the path of travel of the tramper head, by means acuated by such tramper head.

A further obj ect of the invention is` to provide automatic means to actuate the valve shifting' mechanism of the tramper cylinder, should the cylinder fail to move downwardly sufficiently whereby means travelling with it are rendered incapable of actuating the valve shifting mechanism.

Other objects and advantages of the invention will be apparent during` the course of the following description. i

lu the accompanying drawings forming` a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a side elevation of apparatus embodying' my invention,

Figure 2 is an end, elevation of the same, part-s beineY shown in section,

Figure il is a detail section taken on line l of Figuie 1,

Figure 4 is a front side elevation of a bar oriail, i

Fie-ure 5 an edge ele-ration of thesame,

Figure 6 is a rear side elevation of the same,

vFigure 'is a. plan view of the valve shiftinn` mechanism and associated elements,

Figiure S is an elevation of the front side of the same` Figure 9 is an elevation of the rear side,

F i rQure 10y is a transverse section taken on line 1 0-10 of Figure 7,

Serial No. 321,750.

Figure 1l is a side elevation ofthe rake or feeding device, i

Figure 12 is a partly diagrammatic view of a valve and associated elements,

ln the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, theI numeral 15 designates a horizontally rotatable supporting),- frame, secured to a vertical post 1G, adapted to turn on its longitudinal axis. The frame 15 carries a pair of press boxes 17, of any well known or preferred construction. The press boxes 17 are provided at their upper ends with a frame or flange-18, and each frame has a recess 19, adapted for the reception of a vertical lock rod 2O which serves to normally prevent rotation of the frame 15.

Arranged above the press boxes 17 is a lower horizontal frame or support 21y having connection with an Aupper horizontal sup-port 22, as shown. f Arranged above each press `box 1T1 when it is fshifted to the active position, lto the left, are ends 23, which are suitably supported. These ends are included in a feed chute for the press box, the opposite sides of which will new be described. i The rear side of this feed chute is open and receives the lower end of an in- @lined trough 24, within which the cotton or the like is fed. This trough receives therein a feeding device in the'form of a rake' 25 (see Figure 11) embodying` tines 2e, carried by a transverse bar 27. The transverse bar 27 has trunnions 2S and 29 secured to its opposite ends, which are pivoted within beams 30 and 31. Ak second transverse bar 32 is provided at its ends withl trunnions 33 and 34, pivoted in the beanis 3() and 3l. A central beam or tongue 35 is rigidly secured to the beam 32, and is also connected with diagonal braces 36, secured to the beam 32. '.lheibeam 31 is provided at its free end with a weight 37, to compensate for theweigrht of the rake.

at vits upper end the beam v35 is provided with a bearing 38, pivot-ally receiving a pin secured to one end of a crank arm 39, having a counter weight 40 secured to its opposite end. rihis crank arm is rigidly secured to a shaft 42, journaled through bearings 43, and driven hy a sprocket Wheel 44,. engaging a downwardly extending sprocket chain 45, which in turn engages a sprocket wheel 46.

The trunnion 29 is provided with a crank 47, to which is rigidly secured a suitably stiff spring 48, carrying a roller 49, at. its free end, which travels in contact with a cam track 50, held stationary on the trough 24. An upper spring 5l, has its tree end engaged with and projecting beyond the roller 49. This upper spring is rigidly se-Y cured to a crank 53, carried by the trunnion 34. The function of the upper spring to cause the rake to move outwardly and laterally, so that its tines will be withdrawn from the path ot' travel of the trainper head, should the rake stop with its t-ines in such path of travel. The lower spring imparts to the rake a lateral swinging movement, as it is raised and lowered, by enacting with the cam track 50.

The opposite side ot the 'Feed chute is closed by a tripping rack or device 5ft, enibodying spaced slats 55, rigidly secured at their upper ends to a. horizontal strip This strip is hinged, as shown at 57 with the forward side ot the upper trame 22, to swing outwardly. A crank-arm 58 rigidly secured to the strip 56, and has adj ustable pivotal connection as at. 58;L (see Fig. 3) with a link 59, the upper end of which operates through a stationary apertured gude bracket- 60. The link 59 normally engages beneath a camV crank 61, rigidly secured to one end of a horizont-al rock shaft 62, journaledin suitableE bearings. The opposite end of the rock sha-tt 62 carries a trip 63, :tor a purpose to be described.

A; second horizontal rock shaft (ist is arranged near and beneath the rock shatt 62 and carries a crank 65, which is pivoted to thel lock rod 20. A second crank 66 s rigidly securedv to this rock shaft 64, and engages beneath the link 59. It is thus seen that when the lock rod 2O is elevated to release the swinging trame 15, the crank 66 will move upwardly and the. link 59 will be shifted upwardly to disengage the cam crank 61, so that the longitudinal movement ot the link 59 cannot move the cam crank 6l.

The sprocket wheel t6 is loose upon a sha'tt 67` journaled through bearings (Se. Thissproeket wheel embodes a hub 69, 'having. a clutch element 70, to engage a eoaeting clutch element 7l, which is rigidly secured to the shaft 67. The hub 69 has an annular c groove 72, receiving the forked 'end of an arm 73, which is bolted as shown at 74, to a main shifting bar 75. In Figure 7 the main shift-ing bar is shown operated through openingsin standards 77. This main shitting bar 75 is shown moved to the right, as viewed in Figures 7 and 8 when it is shifted to the lef-t, the sprocket wheel 4-6 will be shifted to the left, and rendered idle. This stops theoperation ol' the rake or feeding device.

The trip 63 l which is located near and above a latch 78', is pivoted at 79. This latch has its forward hooked end tl() engaging a stud 8lv carried by a. valve shitting bar 75. lllhen a suliicient amount ot cotton has been fed into the chute, it acts upon the pressure device 54, swinging it outwardly upon its pivot. This outward movement ol' the device 54 turns the rock shaft 62, through the medium ot' link 59 and element 6l, in a direction to cause the trip 63 to depress the tail oit the latch 78, and release the bur 75', which is shifted to the lett as viewed in Figures 7 and 8. When this oeeurs` the tramper head 52 begins to descend, as the valve to be hereinaliter more 'lully described actuated by the valve shitting bar 75 is opened to supply pressure to the tipper end of the cylinder, to be described.

its the trainper head 52 descends. a vertical rail 82, secured to this trainper head, and operated in stationary guides H8, movesl downwardly. Tracks tiel; and N5 secured upon one side oit the rail .92, l'orm a cani groove 86, receiving a roller S7, pivoted to thel lett end olf the main shitting liar 75 b v a. stud SS. The bar 75 is therebvv drawn lo the left and the arm 73 will :dritt the sprocket wheel i116 to the let't as viewed in Figures 7 and 6 and render it idle. lt is thus seen that the feeding device or rake is stopped upon the starting o l the downward movement of the tramper h iad. The stud 88 has a catch S9 pivoted thereto, having a head 90, to engage a stud 9l, carried by the bar 75. When the bar 75 :s shitted to the left, as stated, it is locked in this position by the head 90 engaging the stud 9], and the movement of the bar 75 to the lett. which is comparatively slow, etlects a turther movement to the lett ot the bar 75. thereby further opening the valve [22 to be hereinafter more fully described to supply an increased volume olj steam to the top o1' the cylinder. 'lhe bar 75 has connection with a lea t' spring` 92, which is shown as flexed to the right in Figure 8. 'trom its neutral vertical position, and hence it is placed under tension so that it will aut nnaticall-v shit( the bar 75 to the lett, as above stated. The spring 92 is clamped at its upper end to a transl verse rock bar 93, havingl trunnions 9J, pivoted in stationary standards 95. A second leaf spring` 96 is clamped to the rock bar 93, and extends downwardly for engagement with a vertical bar 97 (see Figure 9) which is rigidly secured to a spring tension bar 9S. as shown at 99. The bar 9S is reciprocatoryY and carries a roller 100, pivoted thereto, and adapted to operate within an inclined groove 101, formed by tracks 102 and 103, gidlv secured to the opposite side ol the vertieallv movable rail 82.

lVlien the bar 75 as viewed in Figures 7 and 8 is shitted to the lett, the spring 92 is returned to the neutral position, and when il ll lOl) l ll) the plunger or tramper head52 nears the end oi? its down stroke, the rail 82 will descend sufliciently so that the `roller 100 will pass within the upper portion of thegroove 101, drawing the spring tension bar 98 to the right, which will turn the rock bar 93, and bla-ce spring 92 under tension, to shift bar 75 to the right, when released by the catch 89. rThe catch 89 will release the bar when the rail 82 moves downwardly sui'liciently so that the trip 104 rigidly secured to the rail 82 contacts'with theitail ol" the catch 89 and swings itshead 90 upwardly.

At its right end, the bar 75 carries a lateral extension 105, adapted to contact with the right end of bar 75, and also with a stop 106, which is adjustable.

',lhe pivot 79 of the catch 7 8 is preferably carried by a horizontally adjustable support or base 107, as clearly shown in Figure 8.

`lli/'hen the tension bar 98 is shifted to the right, its cam face 108 (Figures 7 and 9) engages a resilient rod 109, rigidly securedto a sliderod 110, operating in guides 111. The resilient rod is curved and has a thread 112, engaging a worm 113, on the shaft 67. At its lett end, the slide rod 110 has a lateral extension 1111, to engage an arm 115, carried by the catch 89. It is thus seen that upon the descent of the traniper head, the rod 109 will have its thread 112 thrown into engagei i ment with the threads or worm 118, and the slide rod 110 will be ymoved slowly to the lett. ln case the bale is large and the tramp er head cannot move `downwardly su'lliciently so that the trip will engage the latch 89, to reverse the operation of the valve, the rod 110 will then move over sui'liciently so that its extension 114C engages the arm 115 and operates the catch 89. The rod 109 is tensioned to move away'from the worm 118, and when the spring tension bar 98 is shitted to the left, the thread 112 will disengage the worm, the rod 110 being returned to the right by a spring 115. i

'llhe'tramper head 52 is connected with a piston rod 116, connected with a piston 117,

operating ina cylinder 118. A pipe 119 leads .into one end of the cylinder 118 and a Apipe 120 leads into the opposite end oi this cylinderu The pipes 119 and 120 are connected witha lvalve casing 121, at diametricallyopposits points. This valve casing is included in a tour-way valve structure, and contains a valve 122, having oppositely arranged ports 128 and 124. The valve casing 121 is provided with an exhaust pipe 125 and an inlet pipe 126, dia-metrically opposite each other. r1`he :inlet pipe leads to a source "of steam or fluid pressure 127. It is thus seen that the touiwayvalve and associated elementsis adapted to alternately sup-ply steam to one end oiI the cylinder while it is exhausting the steam from the opposite end.

The 'valve 128 may be turned by a crank `128, connected `with a link 129, secured to an arm or bracket, carried by the valve shifting bar 75.` When the bar 75 is released, at the begining of the operation of the tramper head, the piston 117 is inthe elevated position, and this bar will be shifted to the right to turn the valve 128 to the position shown in Figure l2, so that the steam will act. upon the upper `side oif the piston, and move it downwardly. When the bar 7 5 becomes locked to the main shifting bar 75, by means of the latch 89, and the bar 75 is drawn further to the left, the bar 75 is shitted-iurther to the lett and valve 123 turned to a `tinrther extent, for increasing the volume of steam` supplied to the top of the cylinder, as the trainper head approaches the 4end of its downward travel.

Inthe oper-ation o1 the apparatus, the tremper head 52 may be assumedto be in the elevated position, and the shaft 67 being continuously rotated. The cotton or the like is tied into the inclined trough 24: and is engaged by the rake, which is adapted to move upwardly above the cotton in the trough' and then descend, while partaking lof `a lateral` movement, to feed the cotton into the central portion `ot' the press box andcruite. llifhen'the press box becomes 'filled and the cotton accumulates in the chute, the tripping device 54 is operated, to 'release' thebar 7 5 by the action of trip 63 which, effects disengagement of the latch 78 from the valve shifting bar 7 5'. lWhen vthus released the spring 92 which is then under tension effective to move the valve 'shitting bar to the left (as viewed in Figures 7 and 8),; This movement .ofthe valve shifting bar moves the valve 122 so as to admit pressure into the top of the cylinder 118 and thus cause the tramper to move downwardly. This movement of the valve shifting bar 75 also connects it with the main shitting bar 75, the catch 89 effecting this connection..` rThe initial downward movement of' the tramper results in a movement of the main shifting bar to the left as viewed in'Figures 7 and 8, by reason of the action ot thecam groove 86 and the roller 87, and i `to moveI the sprocket wheel a6' so as to disengage its clutch element 70 from the Clutch 'eleinentfl and thus the ralre y As the tramper continues to descend, the spring` tension bar 98 is moved to the right (as viewed in Figures 7 and 8) by means of stop the operation of i i the action of the roller 100 and the cam groove 1'01 and this tensions the spr-ing 92 so; that it will be eiie'cti've to move the bar to the right when this bar is released from-Kitsconn'ection with the main shifting bar 75. When the tramp'er head moves downwardly sutiiciently the trip 104 strikes the catch 89 and releases thel bar 75 from its connection with the bar 75 and thus permits the'spring 92 to move the bar Tf to the right (as viewed in Figures 7 and 8'). Should the press box contain so much 1naterial `that the tramper head cannot move downwardly to such an extent as to permit engagement 01' the trip 1011 with the catch S9, the disengagement of the trip is effected by means of thek extension 114' of the slide rod which extension engages the arm 1150i the catch, the slide rod being moved to effect this action by means ot its thread 112 and the screw 113, the thread and screw being 'engaged by the action of the cam 108 of the spring tension bar 98 when the' spring tension bar is moved to the right (as viewed in Figures 7 and 8'). In either event the catch 89 is moved tov release the valve shifting bar 75 .and it is-shit'ted to the right by the action of the' spring. 92, and this move* ment of theV valve shifting bar 75 reverses the position oi the valve 122 and admits steam into the lower endv of the cylinder 118 to move the tramper head upwardly. Iit is obvious that when the steam is being ad'inittfed to the lower end of the cylinder 118 it is beingexhausted by the upper end oi the cylinder through the pipes' 119 and 125, and that when the steam is being admitted into the upperr end of the cylinder 1118, the steam is being exhausted from the lower end of the cylinder by means of pipes 120and 125. When the valve shifting bar 75thus moves to the right as viewed in Figures 7 and` 8 under the action of the spring92, itis engaged by the latch 78 and maintainedA in this position even after the traniper head has ascendedv and the Spring tension bar 9S has been moved in the opposite direction by .means of .the roller 100 and cam groove 101 to place the spring 92 under an opposite tension that is under a tension tending.' to mov-e the valve shifting bar 7-5 to the left (as viewed inI Figures T and 8)'. The upward movement of the tramperl also repositions the main shifting bar so as to lagain engage the clutch element 70 and 71 and renew the operation oi? the feeding device.

vIt is to be' understood that the form of my invention herewithshown and described is to-be taken asa preferred example of the same, and that various changes in theshape, sine, andarrangement of parts may be resortedV tio without departingfrom the spirit of my invention,- or the scope of they subjoined claims.

AHaving thns described my invention` l claim:-

1S. In an apparatus ot the ehaincter descrilfieil, a press box, an inclined trough :irranged near 'the upper end ot the pressy borl a rake operating within the trough, means, for actuating said rake inclmlingl a eouizmousl'y rot-ating shaft, motion ti'an:-:nii;-:1ion means between said shattand f-,aid ralve im eliiding clutch mechanism and controllingl mechanism for said clutch includingv :i shi-'ftable bar operated by the movement ol' the trainper hean and connecting mean,c between said bar and said clutch meehauisn 2. ln an apparatus ot the 'rharacer `=e-v scribed,I a. pressv box, a tramper head tor coaction with the press box, a i \,'linder, a piston operating in the cylinder and connected with the tremper head, a valve lo control the inlet otl iuid pressure to the cylinder, and valve shitting meehauirnn l'or the. valves including a `valve shittingY bar connected with the valve, a main :shitting bar carrying a roller. means tor releaaably locking the bars together. a spring teusion bar carrying a roller, a rail conneeted with the tramper head iior movement therewith and having am grooves 'tor the reception of said rollers, and means 'lor relwlsing the bars from each other.

In an apparatus o'l the eharaeter described, a press box, a tremper head 'l'or eoaction with the press box, a cylinder. a piston operating in the cylinder and connected with the tra-mper head, a valve to control the inlet of Huid pressure to the cylinder and valve shifting mechanism tor the valves including a valve shitting bar connected with the val-ve, a main shitting bar carrying,` a roller, means for releasahly locking the bars together,v a spring tension bar carrying` a roller` a rail connected with the Li-amper head for movement therewith and having;- cam grooves tor the reception ol said rollers, a trip carried by tlle tramper lor releasing said bars trom each other. and :iuailiary means operating imlependenily or" the tramper tor seruring` release olI said liarsI from x,ach other.

e. In apparatus oi the eharaeter described, a press box, a laterally moraine tripping element arranged near the pres; box to be moved by material led into 'the pressbox, a tramper head tor coaction with the press box, means to move the tramper head, a reciprocatory element to move in one direction when released ilor actuating saidv1neans,a latch to normally hold the reciprocatory element against immfment, means operated by the laterally movable tripping element to actuate the latch, a device to feed iiiaterial into thepress box, driving means for the device, and means to render the driving, means idle upon the downward movement of the tramper head.

5. ln apparatus of the character described, a press box, a laterally movable trippingelement arranged near the press box to be moved by material fed into the press box, a tramper head for coaction with the press box, a cylinder, a plunger operating within the cylinder and connected with the tramper head, a valveto control the inlet of fluid pressure to the opposite ends of the cylinder, a valve shifting bar connected with the valve, a spring to move the .valve shifting bar in one direction, a latch to hold the bar against such movement, means operated by the laterally movable tripping element to actuate the latch, feeding mechanism to supply material to the press box, driving means for the feeding' mechanism, a main shifting bar having means to render the driving `means inactive, and means connected with the tramper head to move the main shifting bar.

6. In apparatus of the character described, a press box, a laterally movable tripping element arranged near the 4press box, :t tramper head arranged near the press box, a cylinder, a plunger operating within the 'cylinder and connected with the tramper head, a valve to control the inlet of fluid pressure to the opposite ends of the cylinder, a `valve shifting bar connected with the valve, a spring to movethevalve shifting bar in one direction, a latch to hold the bar against such movement, and means operated by the laterally movable tripping element to actuate the latch.

7. ln apparatus of the character' described, a pressure box, a tramper head for coaction with the pressure box, a cylinder, a plunger operating within the cylinder and connected with the tramper head, a valve to control the inlet of fluid pressure to the cylinder, a valve shifting `bar connected with the valve, yielding means to move the bar in either direction, a catch to hold the bar against movement in one direction, means operated by the pressure from the material 'fed into the press box to actua-te the catch, a main shifting bar, a catch. carried by the main shifting bar and adapted to engage with the valve shifjtii'ig bar for connecting these two bars, a member connected with the tramper head to shift the main shifting bar, a feeding device for the pressV box, driving means for the feeding device, and an element to render the driving means inactive secured to the main shifting bar to be actuated thereby,

v 8. In apparatus ofthe character described, a pressure box, a t amper-,head for coaction with the pressure box, a cylinder, a plunger operating within the cylinder and connected with the trainper head, a valve to control the inlet of fluid pressure to the cylinder, a valve shifting bar connected with the valve, yielding means connected with the bar, a catch arranged near one end of the bar to hold it against movement in one direction, means to operate the catch, a main shifting bar carrying a roller, a catch secured to the main shifting bar near the opposite end of the valve shifting bar and serving to lock these two bars together, feeding means for the press box, driving means for the feeding means having its operation controlled by the main shifting bar, a spring tension bar carrying a roller, a device shifted by the spring tension bar andhaving connection with said spring and a rail connected with the tramper head for movement therewith and having cam grooves for the reception of said rollers.

9. 1n apparatus of the character described, a press box, a tramper head to coact therewith, a rotatable shaft having screw-threads, a gear carried by the shaft, feeding means for the press box, driving `means between the feeding means and gear, a main shifting bar having a roller` and provided with means to render the gear idle upon its shaft when moved in one direction, a second bar having a roller and provided with a" cam face, a member having a thread to engage with the screw-threads and actuated by the cam face, a rail connected with the tramper head and having cam grooves to receive the rollers, means to move the tramper head downwardly, and means actuated by said member to stop such downward movement.

10. 1n apparatus of the character described, the combination with a movable frame, 'of a plurality of press boxes carried therein, a tramper head to coact with each press box when shifted to the active position, a lock bar to normally hold the press box in the active position, a tripping device to be moved by'material fed into the press box, a link moved by the tripping device, a cam crank normally engaged by the link, means actuated by the cam crank to move `the tramper head downwardly, and means moved by the movement of the lock bar in one direction to cause the link to disengage the cam. crank.

11. In apparatus of the character described, a press box, an inclined trough arranged near the upper end of thepress box, a rake operating within the trough and embodying a frame, ka forward transverse bar pivoted to the frame and carrying tines, a crank secured to one end of the forward transverse bar, a spring secured to `the crank, a.'v roller carried by the spring, a cam track on the trough to engage the roller, a second spring secured to the frame above the first named spring and projectingl over the press box and adapted to eliiect a lateral movement ol' the 1 'ale,vmeans to .effect falongitudinal movement ot' the rake, a tremper head tocoact with the press box andadapted to engage the second named spring, and means to move the tramper head.

122. In apparatus of the character described, a press box, an inclined trough arranged near the upper vend of ythe press box, a. ralre operating within the trough, embodying a fra-me, a forwardtransverse bar ,pivoted t0 vthe ,rameand carrying ftines, a crank secured to one end of the .forward transverse bar, a spring secured to thecrank, a roller carried by ,the spring, and a cam ,track arranged on `the trough and engaged by the roller.

13. In apparatus oit the character described, a pressure box, a tramper head for ceaction with the pressure box, a cylinder, a plunger operating within `the cylinder and connected with the tr-,amper head, a valve `to control the inlet .of fluid pressure vto the cylinder, a valve shifting bar connected with the valve, yielding means to move the bar in either diFQCtiQn, a catch to hold the bar against movement in one direction, means operated `by the pressure ytrom the material fed into .the p-ress box to `actuate the catch., a main shifting bar, a `catch carried :by the main shitting bar and adapted to engage with the valve shitting bar for connecting ythese .two bars, and amember connected with the tramper head Ato shift the rmain shifting bar.

14. In apparatus vof `the character described, a pressure box, a tremper head iter coaction with :the pressure box, -a cylinder. a plunger operating within the cylinder and connected with the tramper head, a. valve ,to control the inlet ot' :fluid pressure to the cylinder, a valve shifting bar connected with vthe valve, `yielding means connected with the bar, a .catch arranged near one end ot the bar to hold it against movement in one direction, means to operate the catch. a main shitting `bar carrying a roller, a catch secured to ythe main shifting bar near the opposite end of the valve shitting bar and serving to flock'these two bars together, a spring tension bar carrying a` roller, aidevice shi-itted by the spring tension bar and having connection with said spring, and a rail connected with the tramper head lor movement therewith and having cam grooves `for the reception of said rollers.

15. In an apparatus or the character described, a press box, a tramper head for lcoaction with the press box, a cylinder, a plunger operating within the cylinder and connected with the tframper head, a valve to control the inlet of fluid pressure to the cylinder and valve shitting mechanism l'or thc valve including a valve shitting har connected with the valve, spring actuated mcans connected with the bar, a main shifting bar carrying a roller, means for relcasahl)v locking the bars together, a spring tension har carrying av roller and a. rail connected with the tran'iper head for movement therewith and having cam grooves for the reception ol said rollers.

16. In an apparatus of the character dcscribed, a press box, a trampcr head for coaction with the press box, a cylinder` a `plunger operating within the c vlindcr and connected with the tramper hcad, a valvc to control the inlet ot fluid l'ncssurc to thi` c vlinder and valve shitting mechanism lor the -valve including shitting bars carrying rollers and a rail connected with the trampcr lhead for movement therewith und having cam grooves for the reception ot said rollers.

17. In an apparatus of the character described, a press box, a tramper hcad `tor coaction with the press box, a cylinder. a plunger operating within the cvlindcr and connected with the tramper head, a valve to control the inlet of fluid pressure to the c vlinder and valve shitting mechanism ilor the valve including shifting bars carrying roll* ers, spring means li'or actuating one ol said bars, and a rail. connected with the tranlptn head for movement therewith and having cam grooves for the reception ot said rollers.

18. In an apparatus of the character dcscribed, a press box, a trampcr head l'or coaction with the press box, a c vlindcr. a plunger operating within thcI cylinder and connected with thcI trampcr head. a valvc to control the inlet of fluid pressure to the cv]- inder and valve shitting mechanism lor .said valve including shifting bars, spring ln ans for actuating onel ot said hars, and mcans actua-ted by the movement ol1 thc trampcr head for shifting said bars.

19. In an apparatus of the character described, a press box, a trampcr lor coacting with said press box, a piston operating in the cylinder and connected with the tran'lper head, a valve to control the inlet of fluid to 'the cylinder, valve shifting mechanism for said valve including a shitting bar, spring .means .for actuating said har, means actuated by the movement of the tramper head for tensioning said spring means, feeding mechanism tor the press box, drive mechanism Yl'or the feeding mechanism. and. controlling mechanism ttor the drive mechanism including a clutch, and a tripping device asso- I- ciated with the press box controlling said clutch.

VILKIE H. HO-LTBY. 

